DSPeaker Dual Core 2.0: Tips and Tweaks Wanted


I have longstanding problems in my listening room (read: NYC apartment) with room modes that reliably produce horrendous booming bass at some frequencies.  I have worked with speaker positioning to the extent that I can, but because it is a NYC apartment, space is at a premium and I can't solve the problem this way.  I've added bass traps and tried to treat the room in other ways, but still: boominess. This happens whether I am using the tiniest of monitors or large floorstanders, front-ported, floor-ported, rear-ported or sealed.  It is aggravating and actually starting to drive me a bit crazy.

I finally gave up and acquired the DSPeaker Dual Core 2.0 about a year ago, a nifty little unit that has removed the boominess and left me with tighter, firmer and more controlled bass.  But I have a nagging feeling that the unit is also robbing my music of some "air" and "life"; that is, while the bass is much cleaned up, the entire rest of the spectrum sounds duller and a bit more recessed.  And I don't think this is just me "missing" the boomy bass I had before.  It has bothered me to the extent that I keep trying to remove the unit from my system, but then I am left with uncontrolled bass that simply won't do.  I understand that this is a trade-off, but I want to learn how to maximize the results I can get with this unit in my signal chain.

I'm interested in hearing from others who have this unit as to how they have achieved optimum results in the context of their own systems.  Do you run it in between the pre- and power amps?  Between the DAC and the pre?  Do you use the typical calibration or have you found better results by limiting (or extending) the frequency range the unit modifies?  And also, I'm curious what level people set the volume of the unit at.  I have the DSPeaker running between my DAC and the preamp and I'm not sure what level I should be feeding the preamp. 

Any other thoughts, suggestions, comments or complaints about your own experience with this unit are welcome.  I am looking to commiserate with those similarly situated.  I need to solve this problem!!  Thanks!
zm
Thanks rodge827, that's a useful suggestion.  I had been considering dialing back the frequencies I was allowing the Dual Core to modify.  I will give it a try.

The Dual Core usually sets my compensation to 6.0 when I let it run a typical calibration.  I've been finding myself actually increasing this number in an attempt to regain the warmth in the midrange that I feel like the unit is taking away.  I'll try dialing it back and see how that goes.  I feel that when I have the compensation set quite low that the midrange is entirely hollowed out, although that might just be my impression upon moving from "too much" bass to "flat" bass.

I've also already lowered the headroom to 0.... it does help.

I think one of the main issues here is that the dual core is clearly having an effect on the entire frequency spectrum, even when you ask it to only calibrate up to 150hz.  Putting the unit in the signal chain at all clearly has a very tangible effect, even in bypass mode.  I don't know if this has to do with the second A/D/A conversion the signal undergoes.  
When using the Anti-Mode 2.0 Dual Core between the preamp (with built in DAC) and the amp (analog only)  in a 2.2 system, do you guys control the volume with Anti-Mode ore preamp?
zm - have you figure this all out? Do you still have Anti-Mode 2.0 and is it any good?

What about you rodge827?

thanks

ps. looking for a preamp + DAC for Mivera Audio's PurePower. Room correction is a plus as well as USB in. 
I actually pretty much stopped using it some time ago.  It's definitely a useful device in the right application, but my feeling was that keeping it in the signal chain for MY system was doing more damage than helping.  Of course, it might be different for another system, room, set of ears, etc.  

I was also driving myself crazy continuously adjusting the parameters, so to keep myself sane I finally just took it out of my system.
I use mine between a Bryston BDP-1 and a Bryston BDA-2 so everything saying in the digital realm. No A/D/A conversion. I like it a lot.